The Audi AUW is a 2,393 cc, inline — five petrol engine produced between 2001 and 2005. It features a 20 — valve configuration with double overhead camshafts (DOHC), delivering 140 kW (190 PS) at 6,000 rpm and 240 Nm of torque at 3,200 rpm. The five — cylinder layout provides a distinctive firing order and smooth power delivery, supporting refined performance in Audi’s mid — size lineup.
Fitted to models such as the 8E A4, 3B A6, and 8H TT, the AUW engine was engineered for balanced…
Production years 2001–2005 meet Euro 3 standards .
The Audi AUW is a 2,393 cc inline-five petrol engine engineered for mid-size and sport models (2001-2005). It combines 20-valve architecture with DOHC valvetrain to deliver refined performance and high-RPM responsiveness. Designed to meet Euro 3 emissions standards, it balances power with drivability in naturally aspirated configuration.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,393 cc | |
Fuel type | Petrol | |
Configuration | Inline-5, DOHC, 20-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 82.5 mm × 92.8 mm | |
Power output | 140 kW (190 PS) @ 6,000 rpm | |
Torque | 240 Nm @ 3,200 rpm | |
Fuel system | Bosch Motronic ME7.1.1 with sequential injection | |
Emissions standard | Euro 3 | |
Compression ratio | 11.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Timing belt (interference design) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 165 kg |
The Audi AUW was used across Audi's 8E/3B platforms with longitudinal mounting and shared architecture with Volkswagen Group 20v five-cylinder units. This engine received platform-specific adaptations-shorter accessory drives in the 8E A4 and revised coolant routing in the 3B A6-and from 2003 the facelifted 8H TT adopted revised intake manifolds, creating interchange limits. Partnerships enabled shared service tooling across VW, Seat, and Skoda applications. All adaptations are documented in OEM technical bulletins.
Engine Finders UK Ltd, which operates EngineCode.uk, can pass your enquiry to engine suppliers in the UK. The service is for vehicles in the United Kingdom, with UK delivery or fitting. This is a commercially connected service, and sending an enquiry does not confirm diagnosis or compatibility.
Diagnostic reminder: If a technician has recommended replacing the engine, you can send an enquiry to engine suppliers in the UK. Confirm the diagnosis first: an engine-code record does not diagnose a fault.
Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The AUW engine offers solid performance when properly maintained, but is prone to timing belt and ignition system wear. Later models (post-2003) show improved durability with updated tensioner design. Regular use of premium fuel, consistent oil changes with Audi Longlife 01 oil, and timely timing belt replacement significantly improve long-term reliability.
Primary issues include timing belt wear, intake carbon buildup, ignition coil pack failures, and valve cover oil leaks. These are documented in Audi service bulletins and are typical of 20v five-cylinder engines under mixed driving conditions. Preventative maintenance greatly reduces the risk of major repairs.
The AUW engine was used in the Audi A4 (8E), A6 (3B), and TT (8H) from 2001 to 2005. It typically powered 2.4 V6 variants in front-wheel-drive and Quattro configurations. It was also shared across Volkswagen Group models including the VW Passat B5 and early TT variants.
Yes, the AUW responds well to ECU remapping, with safe gains of +25-35 kW achievable on stock internals. However, due to its naturally aspirated design, significant power increases require forced induction upgrades. Tuning should include fuel system inspection and cooling upgrades to maintain reliability.
In combined driving, the AUW achieves approximately 9.5–11.0 L/100km (30–26 mpg UK). Highway efficiency is better at ~8.0 L/100km (~35 mpg UK), while city driving can exceed 12.0 L/100km (~24 mpg UK). Real-world consumption depends heavily on driving style and fuel quality.
Yes, the AUW is an interference engine. If the timing belt fails or skips, piston-to-valve contact will occur, resulting in severe internal damage. Strict adherence to the 90,000 km or 6-year replacement interval is essential to prevent catastrophic failure.
Audi specifies 5W-40 synthetic oil meeting Audi Longlife 01 specification. Oil changes should be performed every 15,000 km or annually to protect the valvetrain and prevent sludge formation. Using correct oil maintains optimal engine longevity and performance.
Comprehensive technical documentation and regulatory references
EngineCode.uk is operated by Engine Finders UK Ltd. It provides engine-reference information and an optional commercial enquiry service. It is not an official manufacturer website. Check the record's sources and confirm vehicle-specific details before relying on it for parts, repairs or replacement.
Our editorial standard prioritises relevant manufacturer documentation and official regulatory sources. The sources and verification status for a record should be checked alongside the data.
A statement is not verified merely because a source is listed. Where supporting evidence is missing or conflicting, the record should identify that limitation. Please report unsupported or inconsistent information.
Transparency in gaps
A missing or unverified value does not mean the manufacturer has withheld it. We distinguish information not yet verified, information not available to us, and information explicitly not disclosed by the source.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
Records are subject to review and correction. Source links, dates and verification notes should be read with the technical information. Our Editorial and Sourcing Policy explains our standards and review process.
Found an error or missing source? Report a problem with this page. Include the field or statement concerned and a supporting source if available. You can also email corrections@enginecode.uk.
Copyright and permissions
Images and other material may be protected by copyright. Attribution does not by itself grant permission to reuse material. If you believe material on this site infringes your rights, contact copyrights@enginecode.uk with the page URL and details of your claim. We will review the material and take appropriate action.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
Our Privacy Policy explains how Engine Finders UK Ltd uses information from visits, vehicle lookups, enquiries and messages. Our Cookie Policy explains cookies and similar technologies and how to change your choices.
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
Ownership and commercial services
EngineCode.uk is owned and operated by Engine Finders UK Ltd. Alongside our reference content, we offer an optional replacement-engine enquiry service through Engine Finders and may identify relevant services provided by businesses connected with us. These commercial connections are disclosed. Using an enquiry service is not required to read our reference content.
Engine Finders UK Ltd operates this website. Our optional enquiry service has a commercial purpose. Our Ownership and Commercial Disclosure explains the relationship between the reference website and that service. Participating suppliers pay a fee or subscription to participate on the network and receive quote requests.
Use this record as a starting point for identification. Specifications and vehicle applications may contain errors or omissions. Confirm the exact engine variant and compatibility using vehicle-specific documentation and a qualified supplier or technician.
All external links open in new tabs. Please verify current availability of resources.